/**
 * User: Jinqn Date: 14-04-08 Time: 下午16:34 上传图片对话框逻辑代码,包括tab:
 * 远程图片/上传图片/在线图片/搜索图片
 */

(function() {

	var uploadFile, onlineFile;

	window.onload = function() {
		initTabs();
		initButtons();
	};

	/* 初始化tab标签 */
	function initTabs() {
		var tabs = $G('tabhead').children;
		for (var i = 0; i < tabs.length; i++) {
			domUtils.on(tabs[i], "click", function(e) {
				var target = e.target || e.srcElement;
				setTabFocus(target.getAttribute('data-content-id'));
			});
		}

		setTabFocus('upload');
	}

	/* 初始化tabbody */
	function setTabFocus(id) {
		if (!id)
			return;
		var i, bodyId, tabs = $G('tabhead').children;
		for (i = 0; i < tabs.length; i++) {
			bodyId = tabs[i].getAttribute('data-content-id')
			if (bodyId == id) {
				domUtils.addClass(tabs[i], 'focus');
				domUtils.addClass($G(bodyId), 'focus');
			} else {
				domUtils.removeClasses(tabs[i], 'focus');
				domUtils.removeClasses($G(bodyId), 'focus');
			}
		}
		switch (id) {
		case 'upload':
			uploadFile = uploadFile || new UploadFile('queueList');
			break;
		case 'online':
			onlineFile = onlineFile || new OnlineFile('fileList');
			break;
		}
	}

	/* 初始化onok事件 */
	function initButtons() {

		dialog.onok = function() {
			var list = [], id, tabs = $G('tabhead').children;
			for (var i = 0; i < tabs.length; i++) {
				if (domUtils.hasClass(tabs[i], 'focus')) {
					id = tabs[i].getAttribute('data-content-id');
					break;
				}
			}

			switch (id) {
			case 'upload':
				list = uploadFile.getInsertList();
				var count = uploadFile.getQueueCount();
				if (count) {
					$('.info', '#queueList').html('<span style="color:red;">' + '还有2个未上传文件'.replace(/[\d]/, count) + '</span>');
					return false;
				}
				break;
			case 'online':
				list = onlineFile.getInsertList();
				break;
			}
			editor.fireEvent('beforeInsertFile', list);
			editor.execCommand('insertfile', list);
		};
	}

	/* 上传附件 */
	function UploadFile(target) {
		this.$wrap = target.constructor == String ? $('#' + target) : $(target);
		this.init();
	}
	UploadFile.prototype = {
		init : function() {
			this.fileList = [];
			this.initContainer();
			this.initUploader();
		},
		initContainer : function() {
			this.$queue = this.$wrap.find('.filelist');
		},
		/* 初始化容器 */
		initUploader : function() {
			var _this = this, $ = jQuery, // just in case. Make sure it's not
			// an other libaray.
			$wrap = _this.$wrap,
			// 图片容器
			$queue = $wrap.find('.filelist'),
			// 状态栏，包括进度和控制按钮
			$statusBar = $wrap.find('.statusBar'),
			// 文件总体选择信息。
			$info = $statusBar.find('.info'),
			// 上传按钮
			$upload = $wrap.find('.uploadBtn'),
			// 上传按钮
			$filePickerBtn = $wrap.find('.filePickerBtn'),
			// 上传按钮
			$filePickerBlock = $wrap.find('.filePickerBlock'),
			// 没选择文件之前的内容。
			$placeHolder = $wrap.find('.placeholder'),
			// 总体进度条
			$progress = $statusBar.find('.progress').hide(),
			// 添加的文件数量
			fileCount = 0,
			// 添加的文件总大小
			fileSize = 0,
			// 优化retina, 在retina下这个值是2
			ratio = window.devicePixelRatio || 1,
			// 缩略图大小
			thumbnailWidth = 113 * ratio, thumbnailHeight = 113 * ratio,
			// 可能有pedding, ready, uploading, confirm, done.
			state = '',
			// 所有文件的进度信息，key为file id
			percentages = {}, supportTransition = (function() {
				var s = document.createElement('p').style, r = 'transition' in s || 'WebkitTransition' in s || 'MozTransition' in s || 'msTransition' in s || 'OTransition' in s;
				s = null;
				return r;
			})(),
			// WebUploader实例
			uploader, actionUrl = editor.getActionUrl(editor.getOpt('fileActionName')), fileMaxSize = editor.getOpt('fileMaxSize'), acceptExtensions = (editor.getOpt('fileAllowFiles') || []).join('').replace(/\./g, ',').replace(/^[,]/, '');
			if (!WebUploader.Uploader.support()) {
				$('#filePickerReady').after($('<div>').html(lang.errorNotSupport)).hide();
				return;
			} else if (!editor.getOpt('fileActionName')) {
				$('#filePickerReady').after($('<div>').html(lang.errorLoadConfig)).hide();
				return;
			}

			uploader = _this.uploader = WebUploader.create({
				pick : {
					id : '#filePickerReady',
					label : lang.uploadSelectFile
				},
				swf : '../../third-party/webuploader/Uploader.swf',
				server : actionUrl,
				fileVal : editor.getOpt('fileFieldName'),
				duplicate : true,
				fileSingleSizeLimit : fileMaxSize,
				compress : false
			});
			uploader.addButton({
				id : '#filePickerBlock'
			});
			uploader.addButton({
				id : '#filePickerBtn',
				label : lang.uploadAddFile
			});

			setState('pedding');

			// 当有文件添加进来时执行，负责view的创建
			function addFile(file) {
				var $li = $('<li id="' + file.id + '">' + '<p class="title">' + file.name + '</p>' + '<p class="imgWrap"></p>' + '<p class="progress"><span></span></p>' + '</li>'),

				$btns = $('<div class="file-panel">' + '<span class="cancel">' + lang.uploadDelete + '</span>' + '<span class="rotateRight">' + lang.uploadTurnRight + '</span>' + '<span class="rotateLeft">' + lang.uploadTurnLeft + '</span></div>').appendTo($li), $prgress = $li.find('p.progress span'), $wrap = $li.find('p.imgWrap'), $info = $('<p class="error"></p>').hide().appendTo($li),

				showError = function(code) {
					switch (code) {
					case 'exceed_size':
						text = lang.errorExceedSize;
						break;
					case 'interrupt':
						text = lang.errorInterrupt;
						break;
					case 'http':
						text = lang.errorHttp;
						break;
					case 'not_allow_type':
						text = lang.errorFileType;
						break;
					default:
						text = lang.errorUploadRetry;
						break;
					}
					$info.text(text).show();
				};

				if (file.getStatus() === 'invalid') {
					showError(file.statusText);
				} else {
					$wrap.text(lang.uploadPreview);
					if ('|png|jpg|jpeg|bmp|gif|'.indexOf('|' + file.ext.toLowerCase() + '|') == -1) {
						$wrap.empty().addClass('notimage').append('<i class="file-preview file-type-' + file.ext.toLowerCase() + '"></i>' + '<span class="file-title" title="' + file.name + '">' + file.name + '</span>');
					} else {
						if (browser.ie && browser.version <= 7) {
							$wrap.text(lang.uploadNoPreview);
						} else {
							uploader.makeThumb(file, function(error, src) {
								if (error || !src) {
									$wrap.text(lang.uploadNoPreview);
								} else {
									var $img = $('<img src="' + src + '">');
									$wrap.empty().append($img);
									$img.on('error', function() {
										$wrap.text(lang.uploadNoPreview);
									});
								}
							}, thumbnailWidth, thumbnailHeight);
						}
					}
					percentages[file.id] = [ file.size, 0 ];
					file.rotation = 0;

					/* 检查文件格式 */
					if (!file.ext || acceptExtensions.indexOf(file.ext.toLowerCase()) == -1) {
						showError('not_allow_type');
						uploader.removeFile(file);
					}
				}

				file.on('statuschange', function(cur, prev) {
					if (prev === 'progress') {
						$prgress.hide().width(0);
					} else if (prev === 'queued') {
						$li.off('mouseenter mouseleave');
						$btns.remove();
					}
					// 成功
					if (cur === 'error' || cur === 'invalid') {
						showError(file.statusText);
						percentages[file.id][1] = 1;
					} else if (cur === 'interrupt') {
						showError('interrupt');
					} else if (cur === 'queued') {
						percentages[file.id][1] = 0;
					} else if (cur === 'progress') {
						$info.hide();
						$prgress.css('display', 'block');
					} else if (cur === 'complete') {
					}

					$li.removeClass('state-' + prev).addClass('state-' + cur);
				});

				$li.on('mouseenter', function() {
					$btns.stop().animate({
						height : 30
					});
				});
				$li.on('mouseleave', function() {
					$btns.stop().animate({
						height : 0
					});
				});

				$btns.on('click', 'span', function() {
					var index = $(this).index(), deg;

					switch (index) {
					case 0:
						uploader.removeFile(file);
						return;
					case 1:
						file.rotation += 90;
						break;
					case 2:
						file.rotation -= 90;
						break;
					}

					if (supportTransition) {
						deg = 'rotate(' + file.rotation + 'deg)';
						$wrap.css({
							'-webkit-transform' : deg,
							'-mos-transform' : deg,
							'-o-transform' : deg,
							'transform' : deg
						});
					} else {
						$wrap.css('filter', 'progid:DXImageTransform.Microsoft.BasicImage(rotation=' + (~~((file.rotation / 90) % 4 + 4) % 4) + ')');
					}

				});

				$li.insertBefore($filePickerBlock);
			}

			// 负责view的销毁
			function removeFile(file) {
				var $li = $('#' + file.id);
				delete percentages[file.id];
				updateTotalProgress();
				$li.off().find('.file-panel').off().end().remove();
			}

			function updateTotalProgress() {
				var loaded = 0, total = 0, spans = $progress.children(), percent;

				$.each(percentages, function(k, v) {
					total += v[0];
					loaded += v[0] * v[1];
				});

				percent = total ? loaded / total : 0;

				spans.eq(0).text(Math.round(percent * 100) + '%');
				spans.eq(1).css('width', Math.round(percent * 100) + '%');
				updateStatus();
			}

			function setState(val, files) {

				if (val != state) {

					var stats = uploader.getStats();

					$upload.removeClass('state-' + state);
					$upload.addClass('state-' + val);

					switch (val) {

					/* 未选择文件 */
					case 'pedding':
						$queue.addClass('element-invisible');
						$statusBar.addClass('element-invisible');
						$placeHolder.removeClass('element-invisible');
						$progress.hide();
						$info.hide();
						uploader.refresh();
						break;

					/* 可以开始上传 */
					case 'ready':
						$placeHolder.addClass('element-invisible');
						$queue.removeClass('element-invisible');
						$statusBar.removeClass('element-invisible');
						$progress.hide();
						$info.show();
						$upload.text(lang.uploadStart);
						uploader.refresh();
						break;

					/* 上传中 */
					case 'uploading':
						$progress.show();
						$info.hide();
						$upload.text(lang.uploadPause);
						break;

					/* 暂停上传 */
					case 'paused':
						$progress.show();
						$info.hide();
						$upload.text(lang.uploadContinue);
						break;

					case 'confirm':
						$progress.show();
						$info.hide();
						$upload.text(lang.uploadStart);

						stats = uploader.getStats();
						if (stats.successNum && !stats.uploadFailNum) {
							setState('finish');
							return;
						}
						break;

					case 'finish':
						$progress.hide();
						$info.show();
						if (stats.uploadFailNum) {
							$upload.text(lang.uploadRetry);
						} else {
							$upload.text(lang.uploadStart);
						}
						break;
					}

					state = val;
					updateStatus();

				}

				if (!_this.getQueueCount()) {
					$upload.addClass('disabled')
				} else {
					$upload.removeClass('disabled')
				}

			}

			function updateStatus() {
				var text = '', stats;

				if (state === 'ready') {
					text = lang.updateStatusReady.replace('_', fileCount).replace('_KB', WebUploader.formatSize(fileSize));
				} else if (state === 'confirm') {
					stats = uploader.getStats();
					if (stats.uploadFailNum) {
						text = lang.updateStatusConfirm.replace('_', stats.successNum).replace('_', stats.successNum);
					}
				} else {
					stats = uploader.getStats();
					text = lang.updateStatusFinish.replace('_', fileCount).replace('_KB', WebUploader.formatSize(fileSize)).replace('_', stats.successNum);

					if (stats.uploadFailNum) {
						text += lang.updateStatusError.replace('_', stats.uploadFailNum);
					}
				}
				$info.html(text);
			}

			uploader.on('fileQueued', function(file) {
				fileCount++;
				fileSize += file.size;

				if (fileCount === 1) {
					$placeHolder.addClass('element-invisible');
					$statusBar.show();
				}

				addFile(file);
			});

			uploader.on('fileDequeued', function(file) {
				fileCount--;
				fileSize -= file.size;

				removeFile(file);
				updateTotalProgress();
			});

			uploader.on('filesQueued', function(file) {
				if (!uploader.isInProgress() && (state == 'pedding' || state == 'finish' || state == 'confirm' || state == 'ready')) {
					setState('ready');
				}
				updateTotalProgress();
			});

			uploader.on('all', function(type, files) {
				switch (type) {
				case 'uploadFinished':
					setState('confirm', files);
					break;
				case 'startUpload':
					/* 添加额外的GET参数 */
					var params = utils.serializeParam(editor.queryCommandValue('serverparam')) || '', url = utils.formatUrl(actionUrl + (actionUrl.indexOf('?') == -1 ? '?' : '&') + 'encode=utf-8&' + params);
					uploader.option('server', url);
					setState('uploading', files);
					break;
				case 'stopUpload':
					setState('paused', files);
					break;
				}
			});

			uploader.on('uploadBeforeSend', function(file, data, header) {
				// 这里可以通过data对象添加POST参数
				header['X_Requested_With'] = 'XMLHttpRequest';
			});

			uploader.on('uploadProgress', function(file, percentage) {
				var $li = $('#' + file.id), $percent = $li.find('.progress span');

				$percent.css('width', percentage * 100 + '%');
				percentages[file.id][1] = percentage;
				updateTotalProgress();
			});

			uploader.on('uploadSuccess', function(file, ret) {
				var $file = $('#' + file.id);
				try {
					var responseText = (ret._raw || ret), json = utils.str2json(responseText);
					if (json.state == 'SUCCESS') {
						_this.fileList.push(json);
						$file.append('<span class="success"></span>');
					} else {
						$file.find('.error').text(json.state).show();
					}
				} catch (e) {
					$file.find('.error').text(lang.errorServerUpload).show();
				}
			});

			uploader.on('uploadError', function(file, code) {
			});
			uploader.on('error', function(code, file) {
				if (code == 'Q_TYPE_DENIED' || code == 'F_EXCEED_SIZE') {
					addFile(file);
				}
			});
			uploader.on('uploadComplete', function(file, ret) {
			});

			$upload.on('click', function() {
				if ($(this).hasClass('disabled')) {
					return false;
				}

				if (state === 'ready') {
					uploader.upload();
				} else if (state === 'paused') {
					uploader.upload();
				} else if (state === 'uploading') {
					uploader.stop();
				}
			});

			$upload.addClass('state-' + state);
			updateTotalProgress();
		},
		getQueueCount : function() {
			var file, i, status, readyFile = 0, files = this.uploader.getFiles();
			for (i = 0; file = files[i++];) {
				status = file.getStatus();
				if (status == 'queued' || status == 'uploading' || status == 'progress')
					readyFile++;
			}
			return readyFile;
		},
		getInsertList : function() {
			var i, link, data, list = [], prefix = editor.getOpt('fileUrlPrefix');
			for (i = 0; i < this.fileList.length; i++) {
				data = this.fileList[i];
				link = data.url;
				list.push({
					title : data.original || link.substr(link.lastIndexOf('/') + 1),
					url : prefix + link
				});
			}
			return list;
		}
	};

	/* 在线附件 */
	function OnlineFile(target) {
		this.container = utils.isString(target) ? document.getElementById(target) : target;
		this.init();
	}
	OnlineFile.prototype = {
		init : function() {
			this.initContainer();
			this.initEvents();
			this.initData();
		},
		/* 初始化容器 */
		initContainer : function() {
			this.container.innerHTML = '';
			this.list = document.createElement('ul');
			this.clearFloat = document.createElement('li');

			domUtils.addClass(this.list, 'list');
			domUtils.addClass(this.clearFloat, 'clearFloat');

			this.list.appendChild(this.clearFloat);
			this.container.appendChild(this.list);
		},
		/* 初始化滚动事件,滚动到地步自动拉取数据 */
		initEvents : function() {
			var _this = this;

			/* 滚动拉取图片 */
			domUtils.on($G('fileList'), 'scroll', function(e) {
				var panel = this;
				if (panel.scrollHeight - (panel.offsetHeight + panel.scrollTop) < 10) {
					_this.getFileData();
				}
			});
			/* 选中图片 */
			domUtils.on(this.list, 'click', function(e) {
				var target = e.target || e.srcElement, li = target.parentNode;

				if (li.tagName.toLowerCase() == 'li') {
					if (domUtils.hasClass(li, 'selected')) {
						domUtils.removeClasses(li, 'selected');
					} else {
						domUtils.addClass(li, 'selected');
					}
				}
			});
		},
		/* 初始化第一次的数据 */
		initData : function() {

			/* 拉取数据需要使用的值 */
			this.state = 0;
			this.listSize = editor.getOpt('fileManagerListSize');
			this.listIndex = 0;
			this.listEnd = false;

			/* 第一次拉取数据 */
			this.getFileData();
		},
		/* 向后台拉取图片列表数据 */
		getFileData : function() {
			var _this = this;

			if (!_this.listEnd && !this.isLoadingData) {
				this.isLoadingData = true;
				ajax.request(editor.getActionUrl(editor.getOpt('fileManagerActionName')), {
					timeout : 100000,
					data : utils.extend({
						start : this.listIndex,
						size : this.listSize
					}, editor.queryCommandValue('serverparam')),
					method : 'get',
					onsuccess : function(r) {
						try {
							var json = eval('(' + r.responseText + ')');
							if (json.state == 'SUCCESS') {
								_this.pushData(json.list);
								_this.listIndex = parseInt(json.start) + parseInt(json.list.length);
								if (_this.listIndex >= json.total) {
									_this.listEnd = true;
								}
								_this.isLoadingData = false;
							}
						} catch (e) {
							if (r.responseText.indexOf('ue_separate_ue') != -1) {
								var list = r.responseText.split(r.responseText);
								_this.pushData(list);
								_this.listIndex = parseInt(list.length);
								_this.listEnd = true;
								_this.isLoadingData = false;
							}
						}
					},
					onerror : function() {
						_this.isLoadingData = false;
					}
				});
			}
		},
		/* 添加图片到列表界面上 */
		pushData : function(list) {
			var i, item, img, filetype, preview, icon, _this = this, urlPrefix = editor.getOpt('fileManagerUrlPrefix');
			for (i = 0; i < list.length; i++) {
				if (list[i] && list[i].url) {
					item = document.createElement('li');
					icon = document.createElement('span');
					filetype = list[i].url.substr(list[i].url.lastIndexOf('.') + 1);

					if ("png|jpg|jpeg|gif|bmp".indexOf(filetype) != -1) {
						preview = document.createElement('img');
						domUtils.on(preview, 'load', (function(image) {
							return function() {
								_this.scale(image, image.parentNode.offsetWidth, image.parentNode.offsetHeight);
							};
						})(preview));
						preview.width = 113;
						preview.setAttribute('src', urlPrefix + list[i].url + (list[i].url.indexOf('?') == -1 ? '?noCache=' : '&noCache=') + (+new Date()).toString(36));
					} else {
						var ic = document.createElement('i'), textSpan = document.createElement('span');
						textSpan.innerHTML = list[i].url.substr(list[i].url.lastIndexOf('/') + 1);
						preview = document.createElement('div');
						preview.appendChild(ic);
						preview.appendChild(textSpan);
						domUtils.addClass(preview, 'file-wrapper');
						domUtils.addClass(textSpan, 'file-title');
						domUtils.addClass(ic, 'file-type-' + filetype);
						domUtils.addClass(ic, 'file-preview');
					}
					domUtils.addClass(icon, 'icon');
					item.setAttribute('data-url', urlPrefix + list[i].url);
					if (list[i].original) {
						item.setAttribute('data-title', list[i].original);
					}

					item.appendChild(preview);
					item.appendChild(icon);
					this.list.insertBefore(item, this.clearFloat);
				}
			}
		},
		/* 改变图片大小 */
		scale : function(img, w, h, type) {
			var ow = img.width, oh = img.height;

			if (type == 'justify') {
				if (ow >= oh) {
					img.width = w;
					img.height = h * oh / ow;
					img.style.marginLeft = '-' + parseInt((img.width - w) / 2) + 'px';
				} else {
					img.width = w * ow / oh;
					img.height = h;
					img.style.marginTop = '-' + parseInt((img.height - h) / 2) + 'px';
				}
			} else {
				if (ow >= oh) {
					img.width = w * ow / oh;
					img.height = h;
					img.style.marginLeft = '-' + parseInt((img.width - w) / 2) + 'px';
				} else {
					img.width = w;
					img.height = h * oh / ow;
					img.style.marginTop = '-' + parseInt((img.height - h) / 2) + 'px';
				}
			}
		},
		getInsertList : function() {
			var i, lis = this.list.children, list = [];
			for (i = 0; i < lis.length; i++) {
				if (domUtils.hasClass(lis[i], 'selected')) {
					var url = lis[i].getAttribute('data-url');
					var title = lis[i].getAttribute('data-title') || url.substr(url.lastIndexOf('/') + 1);
					list.push({
						title : title,
						url : url
					});
				}
			}
			return list;
		}
	};

})();